This overnight casserole could be breakfast, but it could also be bread pudding—in short, it's the perfect thing to serve on a chilly Saturday morning. Cinnamon and comforting, it's just sweet enough to be eaten as-is, but it's also nice topped with a little butter and maple syrup. The chopped pecans absorb some of the moisture from the apples, leaving a nice caramelization and crunch. Assembly is super easy: Get everything together the night before, or even the day of—just be sure to let it sit at room temperature for an hour. Serve with your toppings of choice and a cup of coffee.